Drive-chain.



Patented Dec. 4, I900.

E. F. monss. DRIVE CHAIN.

(Application filed Feb. 28, 1898.)

Model.)

Inventor Euerelt EHO me With 655 68:

Attorneys Unirnn mares arnnr Fries.

EVERETT F. MORSE, OF TRUMANSBURG, NEIV YORK, ASSIGNOR TO THE MORSE CHAINCOMPANY, OF SAME PLACE.

DRIVE-CHAIN.

SPECIFICATION forming part of Letters Patent No. 663,352, dated December4. 00-

Application filed February 26. 1898. Serial No. 671,765. (ModeL) To allwhont it NY/(I/Z/ concern:

Be it known that I, EVERETT F. MORSE, a citizen of the United States,and a resident of Trumansburg, in the county of Tompkins and State ofNew York, have invented certain new and useful Improvements inDrive-Chains, of which the following is a specification.

This invention relates to sprocketrchains for general driving purposes,but especially to that class of these chains wherein a roller isinterposed to make engagement with the sprocket.

It further relates to those chains having a two-part bearing pin orpintle in which said parts are made of hardened tool-steel and roll oneupon the other, reducing thereby friction and wear and the consequentlengthening of the chain and the destruction of the sprockets. Thislatter class of chains is exemplifled in Patent No. 583,150, granted May25, 1897.

One of the greatest objections to sprocketchains is the lengthening orstretching thereof by use, since it increases the pitch of the chainbeyond that of the sprocket-wheels and causes the links to gouge out thesprocketteeth. It also necessitates frequent adjustment of the sprocketWheels to take up slack in the chain or the extraction of links from thechain for the same reason.

The object of this invention is to produce a drive-chain in which boththese defects are overcome and which for that reason shall have aminimum amount of friction in its joints and upon the sprockets andwhich shall be durable and to the greatest possible degree devoid of atendency to lengthen or stretch by use.

To this end theinvention consists in the construction, combination, andarrangement of the parts of a drive-chain, as hereinafter fullydescribed, and set forth in the claims.

In the accompanying drawings, which form a part of this specification,Figure 1 represents in edge view or side elevation a drive-chainembodying the invention. Fig. 2 is a partially-sectionized plan view ofthe subject of Fig. 1. Fig. 3 is a longitudinal section of a portion ofthe chain seen in the first two figures. Figs. 4. and 5 show the outerand inner side links, respectively.

The parts of the chain may be designated as follows, viz: A refers tothe outside links, 13 to the inside links, C to that part of the pintlewhich may be termed the seat-pin, D to that part of the pintle which maybe termed the rocking pin, and E to the roller or sleeve surrounding theparts of the pintle.

The parts A, C, and D are substantially the same as in the patent abovereferred to and are in detail and manner of assembling the same asillustrated in my Patent No. 583,151, granted May 25, 1897-21 e., themetal of the outside links A is forced into a nick in the seat-pin C, asat X, and said pins are provided with the shoulders Z for maintainingthe side links at the proper distance apart, as fully set forth in thelatter patent.

The inside link B has circular holes therein and surrounds both parts ofthe pintle, the rocking pin D resting at its ends in said holes andbearing along its narrow edge upon the centrallineoftheseat-pin,asshown.Around the parts of the pintle and between the inside links the sleeveor roller E is placed and fitted to roll freely about the pintle and toroll into and out of engagement with the sprocket-teeth as the chainpasses over the sprocket-wheels. The roller or sleeve may be made of anysuitable material, but preferably of very hard steel. Then the parts ofthe pin tle being of the best hardened toolsteel there can be but littlewear between the sleeve and the pintle and but little friction betweenthe chains and the sprocket-teeth.

The inside links B are preferably prolonged beyond the pin tle-holes, asshown, so as to insure the engagement of the sprocket-teeth with thesleevesE and to make it impossible for said teeth as they enter theapertures G to strike the ends of said links.

In a chain thus constructed the inside links, as well as the outsideones, may be punched and so save the trouble and expense of boringcenter links or blocks as in the chains forming the subject of theaforesaid patents.

The invention claimed is 1. In a drive-chain the combination with theoutside links, seat.pins connecting them, the inside links through whichthe seat-pins pass, the rocking pins confined at their ends in theinside links and extending alongside of and bearing against theseat-pins, and the rollers E, extending between the inside links andsurrounding the seat-pins and rocking pins and pressing upon the rockingpins when engaging the sprockets.

2. In a drive-chain having a two-part pin tle wherein the said parts areplaced side by side and rock upon one another, the combination with eachof said pintles, of a hardened sleeve 10 surrounding the parts thereofand bearing upon the movable part of the pint-1e when en gaging thesprockets.

Signed at Trumansburg, in the county of Tompkins and State of New York,this 236. day of February, A. D. 1898.

EVERETT F. MORSE.

Witnesses:

FRANK L. MORSE, DAVID B. PERRY.

